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EN 1.8151 Steel vs. Grade 20 Titanium

EN 1.8151 steel belongs to the iron alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is EN 1.8151 steel and the bottom bar is grade 20 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 72
47
Tensile Strength: Ultimate (UTS), MPa 670 to 1940
900 to 1270

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 410
370
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1400
1600
Specific Heat Capacity, J/kg-K 480
520
Thermal Expansion, µm/m-K 13
9.6

Otherwise Unclassified Properties

Density, g/cm3 7.7
5.0
Embodied Carbon, kg CO2/kg material 1.8
52
Embodied Energy, MJ/kg 25
860
Embodied Water, L/kg 49
350

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
33
Strength to Weight: Axial, points 24 to 70
50 to 70
Strength to Weight: Bending, points 22 to 45
41 to 52
Thermal Shock Resistance, points 20 to 58
55 to 77

Alloy Composition


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Aluminum (Al), % 0
3.0 to 4.0
Carbon (C), % 0.4 to 0.5
0 to 0.050
Chromium (Cr), % 0.4 to 0.8
5.5 to 6.5
Hydrogen (H), % 0
0 to 0.020
Iron (Fe), % 95.9 to 97.2
0 to 0.3
Manganese (Mn), % 0.6 to 0.9
0
Molybdenum (Mo), % 0
3.5 to 4.5
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.12
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 1.3 to 1.7
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
71 to 77
Vanadium (V), % 0.1 to 0.2
7.5 to 8.5
Zirconium (Zr), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4

Comparable Variants